-`wait_time_impact` -- plain-language statement of expected wall-clock impact, e.g. "Expected to reduce your clean build by ~3s", "Reduces parallel compile work but unlikely to reduce build wait time", or "Impact on wait time is uncertain -- re-benchmark to confirm"
Every recommendation must include an `actionability` classification:
-`repo-local` -- Fix lives entirely in project files, source code, or local configuration. The developer can apply it without side effects outside the repo.
-`package-manager` -- Requires CocoaPods or SPM configuration changes that may have broad side effects (e.g., linkage mode, dependency restructuring). These should be benchmarked before and after.
-`xcode-behavior` -- Observed cost is driven by Xcode internals and is not suppressible from the project. Report the finding for awareness but do not promise a fix.
-`upstream` -- Requires changes in a third-party dependency or external tool. The developer cannot fix it locally.